JP6399641B2 - Switch device and vehicle equipped with the same - Google Patents

Description

  The present invention relates to a switch device and a vehicle including the switch device.

  2. Description of the Related Art Conventionally, a switch device that detects a rotational position of an object has been used to detect an open / close position of a door or the like in a vehicle. In the vehicle, for example, based on a signal from the switch device, the operating mechanism is configured to drive the door so that the half-closed door is fully closed.

  As this type of switch device, a rotation provided with a case formed with a recess, a fixed terminal having a fixed contact accommodated in the recess, a movable plate that can be moved to and away from the fixed contact, and a cover that covers the case A switch is known (see, for example, Patent Document 1).

  In the switch device of Patent Document 1, the cover covering is not specified, but for example, it can be considered that the case and the cover are fixed by the housing.

JP 2011-210452 A

  By the way, the switch device is required to have a simpler and more reliable structure, and the above-described switch device structure alone is not sufficient, and further improvement is required.

  The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a simpler and more reliable switch device and a vehicle including the same.

The switch device of the present invention includes a housing, a fixed terminal, a movable contact piece, and a cover. The housing has a recess. The fixed terminal is fixed to the housing. The fixed terminal has a fixed contact exposed in the recess. The movable contact piece has conductivity. The movable contact piece is housed in the recess and is configured to be rotatable with respect to the housing. The movable contact piece moves between a position in contact with the fixed contact and a position away from the fixed contact. The cover is configured to close the opening of the recess. The housing and the cover include a fusion region and a stress relaxation region along a peripheral portion of the opening in the housing in a projection view from the cover to the housing. In the fusion region, the housing and the cover are fused. The stress relaxation region relaxes stress generated between the housing and the cover. The length of the fusion region in the circumferential direction of the peripheral portion of the opening is longer than the length of the fusion region in a direction orthogonal to the circumferential direction. The total area in the fusion region is more than half of the total area in the stress relaxation region.
The switch device of the present invention includes a housing, a fixed terminal, a movable contact piece, and a cover. The housing has a recess. The fixed terminal is fixed to the housing. The fixed terminal has a fixed contact exposed in the recess. The movable contact piece has conductivity. The movable contact piece is housed in the recess and is configured to be rotatable with respect to the housing. The movable contact piece moves between a position in contact with the fixed contact and a position away from the fixed contact. The cover is configured to close the opening of the recess. The housing and the cover include a fusion region and a stress relaxation region along a peripheral portion of the opening in the housing in a projection view from the cover to the housing. In the fusion region, the housing and the cover are fused. The stress relaxation region relaxes stress generated between the housing and the cover. As for the said housing, the rotary body and the flexible ring are arrange | positioned at the said recessed part. The rotating body rotates the movable contact piece. The flexible ring is in contact with the housing, the rotating body, and the cover, and is provided along a rotation direction of the rotating body. The rotating body includes a protruding portion. The protruding portion protrudes to the outside from a through hole penetrating in the thickness direction of the cover. The protruding portion projects a lever that rotates the rotating body within a predetermined rotation range toward the outer periphery of the rotating body. In the projection view from the cover to the housing, the fusion region includes a first region provided in the protruding direction of the lever in the peripheral portion, and a second region provided opposite to the protruding direction via the protruding portion. And the area. The first region has a larger area than the second region.

  The vehicle according to the present invention includes the above-described switch device and a door provided with the switch device and whose opening / closing position is detected by the switch device.

  The switch device of the present invention can have a simpler and more reliable structure.

  The vehicle of the present invention can be configured with a simpler and more reliable switch device.

It is sectional drawing explaining the switch apparatus of Embodiment 1. FIG. FIG. 3 is an exploded perspective view illustrating the switch device according to the first embodiment. It is a front view explaining the switch apparatus of Embodiment 1. FIG. It is a perspective view of the back side which shows the principal part of the switch apparatus of Embodiment 1. It is a perspective view of the back side which shows another principal part of the switch apparatus of Embodiment 1. It is a perspective view of the back side explaining the principal part of the switch device for comparison with Embodiment 1. It is explanatory drawing explaining the vehicle provided with the switch apparatus of Embodiment 1. FIG. It is a front view explaining the switch apparatus of Embodiment 2. It is sectional drawing which shows the XX cross section of FIG. 8 in the switch apparatus of Embodiment 2.

  Below, the switch apparatus 10 of this embodiment is demonstrated, referring FIG. 1 thru | or FIG. In addition, in the figure, the same number is attached | subjected with respect to the same member, and the overlapping description is abbreviate | omitted. The size and positional relationship of the members shown in each drawing may be exaggerated for clarity of explanation. In the following description, each element constituting this embodiment may be configured such that a plurality of elements are constituted by one member and one member also serves as a plurality of elements, and conversely, a plurality of functions of one member are provided. It may be realized by sharing with the members.

  As shown in FIGS. 1 to 3, the switch device 10 of the present embodiment includes a housing 1, a fixed terminal 3, a movable contact piece 4, and a cover 2. The housing 1 has a recess 1a. The fixed terminal 3 is fixed to the housing 1. The fixed terminal 3 has a fixed contact 3a exposed in the recess 1a. The movable contact piece 4 has conductivity. The movable contact piece 4 is accommodated in the recess 1a. The movable contact piece 4 is configured to be able to move between a position contacting the fixed contact 3a and a position separating from the fixed contact 3a by rotating with respect to the housing 1. The cover 2 is configured to close the opening 1ba of the recess 1a.

  The housing 1 and the cover 2 are provided with a fusion region 1a1 and a stress relaxation region 1a2 along the peripheral portion 1bb of the opening 1ba in the housing 1 when viewed from the cover 2 to the housing 1. In the fused region 1a1, the housing 1 and the cover 2 are fused. The stress relaxation region 1 a 2 relaxes the stress generated between the housing 1 and the cover 2.

  The switch device 10 of the present embodiment includes a fusion region 1a1 where the housing 1 and the cover 2 are fused, and a stress relaxation region 1a2 that relaxes stress due to fusion between the housing 1 and the cover 2 in the opening 1ba. By providing along the circumference 1bb, a simpler and more reliable structure can be obtained.

  Hereinafter, a more specific configuration of the switch device 10 will be described.

  The switch device 10 preferably includes a rotating body 5 that rotates the movable contact piece 4 and a flexible ring 6 that contacts the housing 1, the rotating body 5, and the cover 2. In the housing 1, a rotating body 5 and a flexible ring 6 are disposed in the recess 1a. The flexible ring 6 is provided along the rotation direction of the rotating body 5. The housing 1 accommodates the movable contact piece 4, the rotating body 5, and the flexible ring 6 in the recess 1a. In the housing 1, the cover 2 is fused by laser welding so as to close the opening 1ba of the recess 1a.

  The housing 1 includes a housing main body 1b having a bottomed cylindrical outer shape, a rectangular rectangular tube-shaped lead-out portion 1c for leading the fixed terminal 3 from the inside of the housing 1 to the outside, and the housing 1 attached to other members. And a mounting portion 1d. The lead-out portion 1c is provided so as to protrude from the outer periphery of the housing main body portion 1b. The attachment portion 1d is provided so as to protrude from the outer periphery of the housing main body portion 1b. The mounting portion 1d is provided on the housing body 1b along with the lead-out portion 1c in plan view. The housing 1 integrally forms a housing body 1b, a lead-out portion 1c, and a mounting portion 1d.

  In the housing main body 1b, an area surrounded by a bottom 1h and a wall 1f extending in a direction perpendicular to the bottom 1h so as to surround the bottom 1h constitutes a recess 1a. The housing body 1b includes a support shaft 1e protruding from the inner bottom surface 1aa of the recess 1a. The recess 1a of the housing body 1b is formed so as to guide the rotation of the rotating body 5 around the support shaft 1e. In the housing 1, although not shown, a lead-out hole penetrating from the end surface of the lead-out portion 1 c to the concave portion 1 a of the housing main body portion 1 b is formed. The housing 1 is provided so that the fixed terminal 3 extends from the outside of the housing 1 to the inside of the recess 1a through the lead-out hole. The housing 1 can integrally form the fixed terminal 3 by insert molding. In the housing main body 1b, the fixed contact 3a of the fixed terminal 3 is exposed on the inner bottom surface 1aa of the recess 1a. The attachment portion 1d is formed with a first insertion hole 1da that penetrates the attachment portion 1d. The housing 1 is configured to be attached to another member by inserting a mounting screw (not shown) through the first insertion hole 1da of the mounting portion 1d.

  The housing 1 preferably has a first protrusion 1g that protrudes outward along the direction opposite to the depth direction of the recess 1a. The housing 1 is provided with a first projecting portion 1g on the side closer to the opening 1ba than the outer periphery of the peripheral portion 1bb in the projection view from the cover 2 to the housing 1. The first protrusion 1g extends along the direction perpendicular to the bottom 1h on the opening 1ba side of the housing 1 at the tip of the wall 1f of the housing body 1b. The first projecting portion 1g is formed in an annular shape when viewed from the cover 2 to the housing 1. The 1st protrusion part 1g does not necessarily need to form in an annular | circular shape, and the some circular arc shape along circumference part 1bb may be sufficient as it. The housing 1 can also use the first projecting portion 1g to align the cover 2 with the housing 1.

  The housing 1 can be formed of a molded product of a resin material. The housing 1 can be formed of, for example, a thermoplastic resin. By forming the housing 1 by injection molding of a resin material, a complicated shape can be formed relatively easily. The housing 1 can be formed using, for example, PBT (polybutylene terephthalate) resin. The housing 1 can be configured to include glass fibers. The material of the housing 1 is not limited to PBT resin, and for example, phenol resin, ABS (acrylonitrile butadiene styrene) resin, PP (polypropylene) resin, or the like may be used.

  When the housing 1 and the cover 2 are fused by laser welding, the switch device 10 absorbs the laser light transmitted through the cover 2 by the housing 1. The housing 1 preferably contains an additive that can absorb laser light and efficiently convert it into heat. In the switch device 10, for example, when the housing 1 and the cover 2 are laser-welded by near-infrared laser light, an additive having a high near-infrared absorption rate may be used. For the housing 1, an additive such as a black dye or carbon having a high near-infrared absorption rate may be appropriately contained in the resin material of the housing 1. The housing 1 is colored black by containing an additive such as carbon in the resin material of the housing 1.

  The cover 2 can be fused with the housing 1 to form a box. The cover 2 has an annular plate-like outer shape. The cover 2 is not limited to an annular plate shape, and may be a disc shape or a rectangular flat plate shape. The cover 2 includes a flat plate portion 2 a that can close the opening 1 ba of the recess 1 a of the housing 1. The cover 2 includes a first through hole 2aa at the center of the flat plate portion 2a. The first through hole 2aa penetrates in the thickness direction of the cover 2. The cover 2 preferably has a second protruding portion 2g that protrudes along the thickness direction of the cover 2. The 2nd protrusion part 2g is comprised so that it can fit with the 1st protrusion part 1g. As shown in FIG. 4, the second protrusion 2 g is formed in an annular shape that protrudes toward the housing 1 on the outer periphery on the back side of the cover 2. The 2nd protrusion part 2g does not necessarily need to form in an annular shape, and may be a plurality of circular arcs along the outer periphery. The switch device 10 is configured such that the second projecting portion 2g and the peripheral portion 1bb of the housing 1 can come into contact with the cover 2 covered with the housing 1. The second projecting portion 2g is not limited to a shape that can be fitted in close contact with the first projecting portion 1g, and the second projecting portion 2g and the first projecting portion are interposed via a gap as long as the cover 2 can be covered with the housing 1. You may be comprised so that the part 1g can be fitted.

  In the switch device 10, it is preferable that the housing 1 and the cover 2 are fused in a region where the peripheral portion 1 bb and the second projecting portion 2 g overlap in a projection view from the cover 2 to the housing 1. When the switch device 10 is fused between the housing 1 and the cover 2, the first protrusion 1 g can also prevent the molten resin material from entering the recess 1 a. The switch device 10 can also suppress the occurrence of thermal damage to the flexible ring 6 due to the molten resin material by providing the housing 1 with the first protrusion 1g. The cover 2 includes a plurality of arc-shaped portions 2e protruding in an arc shape on the back side. The cover 2 includes a recess 2ca between the adjacent arc-shaped portion 2e and the arc-shaped portion 2e on the back side. The switch device 10 is not only a region where the peripheral portion 1bb and the second projecting portion 2g overlap, but also a region where the first projecting portion 1g and the second projecting portion 2g overlap in a projection view from the cover 2 to the housing 1. May be fused.

  The cover 2 can be formed of a material having electrical insulation. When the cover 2 is fused with the housing 1 by laser light, it is preferable to use a material having higher laser light transmissivity than the housing 1. The cover 2 can be formed using a white resin material. The switch device 10 can facilitate the fusion in a predetermined region as the cover 2 has high translucency with respect to laser light and the housing 1 has high absorbability with respect to laser light. The cover 2 can be formed relatively easily by forming it by injection molding of a resin material. As a material of the cover 2, for example, it can be formed using PBT resin. The cover 2 can be made of a PBT resin containing glass fiber. The material of the cover 2 is not limited to PBT resin, but POM (polyoxymethylene) resin, PP resin, ABS resin, or the like may be used.

  The fixed terminal 3 includes a fixed contact 3 a that is exposed in the recess 1 a of the housing 1, and a terminal portion 3 b that is electrically connected to the fixed contact 3 a and passes through the lead-out hole and is exposed to the outside of the housing 1. The switch device 10 includes three fixed terminals 3. The three fixed terminals 3 are arranged in the recessed portion 1a of the housing 1 in a state of being separated from each other, and each fixed contact 3a is exposed from the inner bottom surface 1aa in the recessed portion 1a. The switch device 10 is not limited to the configuration provided with three fixed terminals 3, but may have one or more fixed terminals 3. The fixed contact 3a is formed in a fan-shaped outer shape along the axis of the support shaft 1e. The fixed contact 3a is not limited to the fan-shaped outer shape, and may be formed in an appropriate shape. The switch device 10 includes a first fixed contact 3a1, a second fixed contact 3a2, and a third fixed contact 3a3 as the fixed contact 3a. The first fixed contact 3a1, the second fixed contact 3a2, and the third fixed contact 3a3 are provided side by side at a predetermined interval. The fixed terminal 3 is preferably made of a highly conductive material. For example, brass may be used for the fixed terminal 3. The material of the fixed terminal 3 is not limited to brass but may be a conductor such as phosphor bronze or silver plated copper. The fixed terminal 3 can be formed by punching a metal flat plate.

  The movable contact piece 4 is movable between a position where the movable contact piece 4 can be electrically connected by contacting the fixed contact 3a and a position where the movable contact piece 4 is electrically insulated away from the fixed contact 3a. The movable contact piece 4 is disposed to face the fixed contact 3a. The movable contact piece 4 is fixed to the rotating body 5. The movable contact piece 4 is provided so as to be rotatable in a plane parallel to the bottom 1 h as the rotating body 5 rotates. As shown in FIG. 2, the movable contact piece 4 includes a frame-shaped substrate 4a and three extending portions 4b that extend in an arc shape along the side edge of the substrate 4a. The extending portions 4b are provided at predetermined intervals along the outer periphery of an imaginary circle whose center of rotation is the center of the substrate 4a. In the extending portion 4b, a slit 4ca is formed along the circumferential direction. The extending portion 4b includes a pair of contact pieces 4c separated by a slit 4ca. The contact piece 4c is inclined toward the inner bottom surface 1aa side of the concave portion 1a of the housing 1 toward the tip. The tip of the contact piece 4c constitutes a movable contact 4cb that can contact the fixed contact 3a. The movable contact piece 4 has elasticity so that a force acts toward the fixed contact 3a. In the switch device 10, the movable contact piece 4 is disposed in the recess 1 a of the housing 1 so as to cover the housing 1 having the fixed contact 3 a. In the switch device 10, the movable contact 4 cb of the movable contact piece 4 and the fixed contact 3 a on the housing 1 side can be arranged to face each other.

  In the switch device 10, the movable contact piece 4 fixed to the rotating body 5 rotates together with the rotating body 5, and the movable contact 4cb of the movable contact piece 4 slides along the inner bottom surface 1aa of the recess 1a. In the switch device 10, the fixed terminal 3 and the movable contact piece 4 are electrically connected to each other at a position where the fixed contact 3 a and the movable contact 4 cb are in contact with each other in the rotation direction of the movable contact piece 4. In the switch device 10, the fixed terminal 3 and the movable contact piece 4 are electrically insulated at a position where the fixed contact 3 a and the movable contact 4 cb are separated from each other in the rotation direction of the movable contact piece 4. The switch device 10 is configured to conduct between the two fixed terminals 3 via the movable contact piece 4. The movable contact piece 4 may be configured such that each of the plurality of movable contacts 4cb contacts the plurality of fixed contacts 3a at the same time, or one movable contact 4cb contacts only one fixed contact 3a. The switch device 10 can make the fixed terminal 3 and the movable contact piece 4 conductive or insulated according to the rotation of the movable contact piece 4. In the switch device 10, any of the three fixed terminals 3 can be electrically connected to each other via the movable contact piece 4 at the predetermined rotational position. The movable contact piece 4 can be formed using phosphor bronze, for example. The material of the movable contact piece 4 is not limited to phosphor bronze but may be brass, a conductor obtained by silver-plating copper, or the like. The movable contact piece 4 can be formed by punching and bending a metal flat plate.

  The rotating body 5 is configured to be rotatable around the support shaft 1e protruding from the inner bottom surface 1aa of the recess 1a of the housing 1. The rotating body 5 includes a columnar base portion 5a and a disk-shaped support portion 5c provided on one surface side of the base portion 5a. The outer diameter of the columnar base portion 5a is smaller than the outer diameter of the support portion 5c. The base portion 5a includes a prismatic protruding portion 5b protruding from the base portion 5a along the thickness direction of the base portion 5a. The protrusion part 5b is provided on the opposite side to the support part 5c via the base part 5a. The base 5a includes a hole 5da that can be fitted to the support shaft 1e. The hole 5da constitutes a bearing for the support shaft 1e. The base 5a is formed in a size that can rotate along the first through hole 2aa in a state where a part of the base 5a is inserted through the first through hole 2aa of the cover 2. The protruding portion 5b is configured to protrude from the first through hole 2aa of the annular plate-like cover 2. The support portion 5c is formed larger than the first through hole 2aa. The support portion 5 c is covered with the cover 2. As shown in FIG. 2, the support portion 5c includes an annular portion 5g that protrudes in an annular shape around the base portion 5a along the thickness direction of the support portion 5c. As shown in FIG. 5, the support portion 5 c includes an annular boss portion 5 h that protrudes around the hole portion 5 da. The boss portion 5h includes a convex portion 5j that protrudes outward from the annular outer periphery. The support portion 5 c faces the movable contact piece 4. The rotating body 5 is configured such that the boss portion 5h can be fitted into the second through hole 4aa provided in the substrate 4a of the movable contact piece 4.

  The rotating body 5 is formed by fitting the notch 4ab in which a part of the substrate 4a is cut out in the second through-hole 4aa of the movable contact piece 4 and the projection 5j, so that the movable contact piece 4 and the rotating body 5 It is configured so that the positioning of can be accurately performed. The support portion 5c is provided with a protruding pin 5e protruding along the thickness direction of the support portion 5c on the side opposite to the base portion 5a. The rotating body 5 includes three protruding pins 5e at predetermined intervals along the outer periphery of the support portion 5c. The support portion 5c includes a rectangular stopper 5f provided in the vicinity of the protruding pin 5e. The support portion 5 c inserts the protruding pin 5 e into the third insertion hole 4 ba formed in the substrate 4 a of the movable contact piece 4. The protruding pin 5e is slightly smaller than the inner diameter of the third insertion hole 4ba. The rotating body 5 has the edge 4da of the movable contact piece 4 aligned with the stopper 5f. In the rotating body 5, the tip of the protruding pin 5e is melted in a state where the protruding pin 5e is inserted into the third insertion hole 4ba and the end edge 4da of the movable contact piece 4 and the stopper 5f are combined. The rotating body 5 can be fixed by the movable contact piece 4 being supported by the rotating body 5 by melting and crushing the tip of the protruding pin 5e.

  The rotating body 5 is preferably provided with electrical insulation. The rotating body 5 can be formed using, for example, a POM resin. The material of the rotating body 5 is not limited to the POM resin, and a resin material such as PP resin may be used. By forming the rotating body 5 by injection molding of a resin material, a complicated shape can be formed relatively easily. The switch device 10 has a structure capable of rotating the rotating body 5 according to the rotating force when a force that rotates the protruding portion 5b protruding from the cover 2 is applied.

  The flexible ring 6 can prevent moisture from entering the space surrounded by the recess 1a of the housing 1 in which the fixed contact 3a and the movable contact piece 4 are disposed and the rotating body 5, and entry of dust and the like. . The flexible ring 6 can function as a sealing material. The flexible ring 6 is inserted into the base portion 5a of the rotating body 5, and the wall portion 1f of the housing main body portion 1b, the flat plate portion 2a of the cover 2, the base portion 5a of the rotating body 5, and the support portion 5c of the rotating body 5. It is arranged at a site surrounded by. As the flexible ring 6, for example, an X ring whose radial cross section is an X shape or an O ring whose radial cross section is an O shape can be used. When the X ring is used, the flexible ring 6 is configured such that the positions of the X-shaped first recess 6aa and the annular portion 5g of the rotating body 5 are aligned as shown in FIG. The flexible ring 6 is configured such that the X-shaped second recess 6ab facing the first recess 6aa and the arc-shaped portion 2e of the cover 2 are aligned. The arc-shaped portion 2e is configured to be able to fit with the second recess portion 6ab of the flexible ring 6. When the X-ring is used, the flexible ring 6 requires less radial interference compared to the O-ring. Therefore, the wear of the flexible ring 6 can be suppressed by reducing the contact pressure. It becomes. When the X-ring is used for the flexible ring 6, the contact pressure is distributed over the entire cross section, so that the sealing performance can be improved as compared with the O-ring. Furthermore, when the X-ring is used for the flexible ring 6, if the burr at the time of molding is formed in the first recess 6aa and the second recess 6ab, it is possible to suppress the loss of sealing performance compared to the O-ring. You can also Nitrile rubber can be used for the flexible ring 6, for example. The material of the flexible ring 6 is not limited to nitrile rubber, and fluorine rubber, acrylic rubber, silicone rubber, ethylene propylene rubber, chloroprene rubber, or the like may be used.

  The switch device 10 can be electrically connected to the harness 9. The harness 9 includes an electric wire 9 a that is electrically connected to the fixed terminal 3, and a fixing member 9 b that fixes the electric wire 9 a to the housing 1. The electric wire 9a is connected to the terminal portion 3b exposed from the lead-out portion 1c of the housing 1 by, for example, soldering. The fixing member 9b can be formed of, for example, a thermoplastic resin.

  Below, the switch apparatus 10 is demonstrated compared with the switch apparatus of a comparative example. The switch device of the comparative example is basically the same as the switch device 10 except that the peripheral portion 1bb of the housing 1 and the second projecting portion 2g of the cover 2 shown in FIG. 6 are fused together in a ring shape by laser welding. The structure is similar. In the cover 2 shown in FIG. 6, instead of the arcuate part 2e shown in FIG. 4, an annular part 2f with a part cut away so that it can be fitted with the second recess part 6ab of the flexible ring 6. It has.

  First, the switch device 10 of the present embodiment will be described. In the switch device 10, the cover 2 holds and fixes the movable contact piece 4, the rotating body 5, and the flexible ring 6 housed in the recess 1 a of the housing 1 so as not to come out. In the switch device 10, the housing 1 and the cover 2 are fused and fixed by laser welding. Although not shown, the switch device 10 fuses the housing 1 and the cover 2 by laser welding using a laser irradiation device. The switch device 10 vibrates to the internal fixed contact 3a and the movable contact piece 4 as compared with the configuration in which the housing 1 and the cover 2 are fixed by ultrasonic welding by laser welding the housing 1 and the cover 2. It is possible to suppress the occurrence of problems associated with. The switch device 10 can suppress a decrease in curing time and a yield by laser welding the housing 1 and the cover 2 as compared with a configuration in which the housing 1 and the cover 2 are fixed by an adhesive method. . The switch device 10 can reduce the work time at the time of recycling dismantling by laser welding the housing 1 and the cover 2 as compared with a configuration in which the housing 1 and the cover 2 are fixed by screws. There is an advantage.

  By the way, in the switch device of the comparative example, when the housing 1 and the cover 2 are fused, internal stress tends to be accumulated between the housing 1 and the cover 2 due to the fusion. In the switch device, the internal stress tends to increase as the area where the housing 1 and the cover 2 are fused is larger. In particular, in the switch device, when the housing 1 is fused in a ring shape over the entire circumference of the second projecting portion 2g of the cover 2 shown in FIG. 6, accumulation of internal stress tends to increase. In the switch device, the housing 1 and the cover 2 may be peeled off when an external force is applied in the direction in which the internal stress increases with the rotation of the rotating body 5. In the switch device, even when the same resin material is used for the housing 1 and the cover 2, the cover 2 that transmits the laser light and the laser light are absorbed as the additive that absorbs the laser light is contained in the housing 1. There is a tendency for internal stress to easily occur between the housing 1 and the housing.

  On the other hand, the switch device 10 of the present embodiment performs laser welding of the housing 1 and the cover 2 along the annular shape of the cover 2 so that a plurality of arc-shaped fusion regions 1a1 are formed. The switch device 10 includes a plurality of fusion regions 1a1 in which the housing 1 and the cover 2 are fused, and the stress relaxation region 1a2 that relaxes the stress generated by the fusion of the housing 1 and the cover 2 is the fusion region 1a1. By providing it in between, peeling between the housing 1 and the cover 2 can be suppressed. The switch device 10 can improve the tact time by intermittently welding the housing 1 and the cover 2 along the peripheral portion 1bb of the opening 1ba in the housing 1 without performing laser welding on the entire periphery. It becomes possible. In the switch device 10, it is assumed that the internal stress accompanying the fusion can be reduced by the stress relaxation region 1a2 while the housing 1 and the cover 2 are fused by laser welding.

  As a result, the switch device 10 of the present embodiment can have a simpler and more reliable structure.

  The stress relaxation region 1a2 is not only configured to include a region where laser welding is not performed between the fusion region 1a1 where the housing 1 and the cover 2 are fused by laser welding, but also between the fusion region 1a1 and the housing 1 You may comprise by the some groove | channel provided in the cover 2. FIG. The switch device 10 can also relieve the stress generated between the housing 1 and the cover 2 by providing a plurality of grooves in the housing 1 and the cover 2 between the fusion regions 1a1.

  Since the switch device 10 forms the stress relaxation region 1a2, a metal that reflects laser light may be formed in the region of the cover 2 corresponding to the stress relaxation region 1a2. In the switch device 10, when a metal that reflects laser light is formed in the region of the cover 2 corresponding to the stress relaxation region 1 a 2, the laser light that passes through the cover 2 is reflected by the metal, and the infrared rays are absorbed by the housing 1. This can be suppressed. Therefore, in the switch device 10, since the fusion with the housing 1 is suppressed in the region where the metal of the cover 2 is formed, the stress generated between the housing 1 and the cover 2 can be relieved. In the switch device 10 of the present embodiment, the housing 1 and the cover 2 are directly fused and fixed by laser welding, but there are inclusions that adhere between the housing 1 and the cover 2. Also good.

  It is preferable that there are at least three fusion regions 1a1 along the peripheral portion 1bb. Since the switch device 10 has three or more fusion regions 1a1, it is possible to stabilize the fusion between the housing 1 and the cover 2 as compared with the one having two fusion regions 1a1. It becomes. The switch device 10 stabilizes the fusion between the housing 1 and the cover 2, so that even if an external force is applied in a direction in which the cover 2 is separated from the housing 1, the force is distributed and the cover 2 is detached from the housing 1. Can be suppressed. The switch device 10 can also prevent the housing 1 and the cover 2 from rattling.

  If the total area of the fusion region 1a1 is larger than the total area of the stress relaxation region 1a2 in the projection view from the cover 2 to the housing 1, the switch device 10 has a total area of the fusion region 1a1 of the total stress relaxation region 1a2. The bonding strength can be increased as compared with a smaller area. Further, in the projection view from the cover 2 to the housing 1, the switch device 10 improves productivity by shortening the tact time if the total area in the fusion region 1a1 is smaller than the total area in the stress relaxation region 1a2. It becomes possible. In the switch device 10, it is more preferable that the total area in the fusion region 1 a 1 is half or more than the total area in the stress relaxation region 1 a 2 in the projection view from the cover 2 to the housing 1.

  In the switch device 10, the fusion region 1 a 1 between the housing 1 and the cover 2 is not limited to a smooth surface but may be an uneven surface. Housing 1 can also promote fusion of housing 1 by making fusion field 1a1 into a rough surface.

  Below, the assembly process of the switch apparatus 10 is demonstrated easily.

  In the assembly process of the switch device 10, the housing 1 in which the fixed terminal 3 is integrally formed is prepared in advance so that the fixed contact 3a is exposed in the recess 1a. In the assembly process, the support shaft 1e protruding from the bottom 1h of the housing 1 is inserted into the hole 5da of the rotating body 5 to which the movable contact piece 4 is fixed. In the assembly process, the flexible ring 6 using the X ring is arranged so that the positions of the first recessed portion 6aa of the flexible ring 6 and the annular annular portion 5g of the rotating body 5 are matched. In the assembling process, the cover 2 is arranged so that the second recessed portion 6ab of the flexible ring 6 and the arc-shaped portion 2e of the cover 2 are aligned. In the assembly process, the cover 2 is covered so as to close the opening 1ba of the housing 1 in a state where the rotating body 5 and the flexible ring 6 are disposed in the recess 1a of the housing 1.

  Subsequently, in the assembly process, laser light is irradiated from the cover 2 side toward the housing 1 using a laser irradiation device in a state where a predetermined pressure is applied between the housing 1 and the cover 2. In the assembling process, the laser light transmitted through the white cover 2 is absorbed by the housing 1 colored dark. In the assembly process, the housing 1 irradiated with the laser light is melted by heat generated by the absorption of the laser light, and the cover 2 that is in pressure contact with the housing 1 is fused. In the assembly process, a plurality of fusion regions 1a1 are formed by intermittently irradiating laser light along the outer periphery of the cover 2 in an arc shape. In the switch device 10, the fusion state of the fusion region 1 a 1 fused by laser welding tends to be affected by the content of the additive contained in the housing 1. When the content of the additive that promotes the absorption of laser light contained in the housing 1 is large, the switch device 10 has a wider fusion region 1a1 than the case where the content of the additive is small. The melting region in the thickness direction tends to be small. When the content of the additive that promotes the absorption of the laser light contained in the housing 1 is small, the switch device 10 melts the housing 1 in the thickness direction as compared with the case where the content of the additive is large. The area and the melting area of the cover 2 tend to be asymmetric. In the switch device 10, laser welding between the housing 1 and the cover 2 can be performed relatively easily by appropriately setting the irradiation density of the laser light, the scanning speed of the laser light, and the material of the housing 1 and the cover 2. It becomes possible.

  As a configuration of a laser irradiation apparatus (not shown), for example, an apparatus capable of irradiating a laser beam in a dot shape or a line shape using a lens can be used. For example, the laser irradiation apparatus may be configured to irradiate laser light from an infrared semiconductor laser to a portion where the housing 1 and the cover 2 are fused via an optical fiber and a collimator lens. As the laser irradiation apparatus, for example, a 30 W semiconductor diode laser apparatus with a laser beam wavelength of 810 nm to 920 nm can be used. For example, the laser irradiation apparatus may appropriately set the laser scanning speed in a range of 1 mm / s to 100 mm / s. If the laser output is too large, the laser irradiation device may cause a phenomenon of voids or resin scattering in the fusion region 1a1 between the housing 1 and the cover 2, and the laser output may be adjusted appropriately.

  The switch apparatus 10 of this embodiment can be used for the switch apparatus 10 which detects the opening / closing position of the door 32 of the motor vehicle which is the vehicle 30, for example, as shown in FIG. In other words, the vehicle 30 has a configuration in which the above-described switch device 10 and the switch device 10 are provided on the door 32. For example, the switch device 10 can be incorporated into the closer system 31 for automatically closing the door 32 when the door 32 is in a half-door state. The closer system 31 is configured such that the switch device 10 can detect the rotation angle of the rotating body 5 in accordance with the opening / closing position of the door 32. When the closer system 31 processes the signal corresponding to the rotation angle of the switch device 10 with the microcomputer and determines that the door 32 is in the half-door state, the closer system 31 moves the motor with the electric signal from the microcomputer to It is configured to be fully closed.

(Embodiment 2)
The switch device 10 of the second embodiment shown in FIG. 8 includes a lever 7 that can be fitted to the rotating body 5 of the first embodiment shown in FIG. 3, and has a predetermined fusion region 1 a 1 among the plurality of fusion regions 1 a 1. The main difference is that the area is increased. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  In the switch device 10 of the present embodiment, as shown in FIGS. 8 and 9, the rotating body 5 includes a protruding portion 5 b that protrudes to the outside from a through hole 2 aa that penetrates in the thickness direction of the cover 2. The protruding portion 5 b protrudes a lever 7 that rotates the rotating body 5 within a predetermined rotation range toward the outer periphery of the rotating body 5. In the projection view from the cover 2 to the housing 1, the fusion region 1a1 is provided in the first region 1a3 provided in the protruding direction of the lever 7 in the peripheral portion 1bb and the second region provided opposite to the protruding direction via the protruding portion 5b. And a region 1a4. The first region 1a3 has a larger area than the second region 1a4.

  The lever 7 includes a cylindrical connecting portion 7a and an arm-like portion 7b provided so as to extend outward from the outer periphery of the connecting portion 7a. The connecting portion 7a includes a fitting hole 7aa that is recessed in the thickness direction. The fitting hole 7aa is configured to be able to be fitted with the protruding portion 5b of the rotating body 5. The lever 7 is coupled to the rotating body 5 by fitting the base portion 5a of the rotating body 5 into the fitting hole 7aa of the connecting portion 7a. The lever 7 is configured to be able to rotate the rotating body 5 around the support shaft 1 e of the housing 1 by fitting the protruding portion 5 b into the fitting hole 7 aa when the lever 7 rotates.

  In the switch device 10, for example, the rotation body 5 can be set to 100 ° as a rotatable range. The switch device 10 may be appropriately provided with a restriction portion (not shown) that restricts the rotation range of the lever 7 so that the rotating body 5 does not rotate beyond the set 100 °.

  As the lever 7 rotates, the switch device 10 also rotates in conjunction with the rotating body 5 connected to the lever 7. The lever 7 can be formed using, for example, POM resin. The material of the lever 7 is not limited to the POM resin, and may be formed using a resin material such as PP resin, ABS resin, or PBT resin. The lever 7 may be formed in an appropriate shape by injection molding.

  By the way, in the switch apparatus 10, when rotating the rotary body 5 with the lever 7, force may be applied to the protrusion direction of the support shaft 1e, and the direction inclined. When a large force is applied to the switch device 10 in the protruding direction and the inclined direction, the force is applied in the direction in which the cover 2 is separated from the housing 1 via the rotating body 5 and the flexible ring 6. In the switch device 10, if a force in a direction away from the housing 1 is applied to the lever 7, the fusion region 1 a 1 in the direction in which the lever 7 protrudes may be peeled due to the lever principle.

  In the switch device 10, the displacement region of the lever 7 is larger in the direction in which the lever 7 moves away from the housing 1 than in the direction in which the lever 7 approaches the housing 1, and the force applied to the lever 7 is relatively increased. Even when a force is applied in a direction in which the lever 7 moves away from the housing 1, the switch device 10 suppresses the cover 2 from being detached from the housing 1 because the first region 1a3 has a larger area than the second region 1a4. It becomes possible. In order to make the area of the first region 1a3 larger than the area of the second region 1a4, the switch device 10 may change the irradiation area of the laser light irradiated to the first region 1a3 or the second region 1a4, or the laser light. The laser output may be changed.

  The switch device 10 of the present embodiment can be mounted on the closer system 31 mounted on the door 32 of the vehicle 30 as in the first embodiment. The vehicle 30 can detect the opening / closing position of the door 32 by the switch device 10.

DESCRIPTION OF SYMBOLS 1 Housing 1a Recessed part 1a1 Fusion area | region 1a2 Stress relaxation area | region 1a3 1st area | region 1a4 2nd area | region 1ba Opening 1bb Peripheral part 1g 1st protrusion part 2 Cover 2aa Through-hole 2g 2nd protrusion part 3 Fixed terminal 3a Fixed contact 4 Movable contact piece DESCRIPTION OF SYMBOLS 5 Rotating body 5b Projection part 6 Flexible ring 7 Lever 10 Switch apparatus 30 Vehicle 32 Door

Claims (8)

A housing having a recess;
A fixed terminal having a fixed contact exposed in the recess and fixed to the housing;
A conductive movable contact piece that moves between a position contacting the fixed contact and a position separating from the fixed contact by being stored in the recess and rotating with respect to the housing;
A cover for closing the opening of the recess,
The housing and the cover, in a projected view from the cover to the housing, along a peripheral portion of the opening in the housing, a fusion region where the housing and the cover are fused, and the housing A stress relaxation region for relaxing stress generated between the cover and the cover;
The length of the fusion region in the circumferential direction of the peripheral portion of the aperture, rather long than the length of the fused regions in a direction perpendicular to the circumferential direction,
The switch device according to claim 1, wherein a total area in the fusion region is at least half of a total area in the stress relaxation region .   The housing includes a rotating body that rotates the movable contact piece, and a flexible ring that contacts the housing, the rotating body, and the cover and that is provided along a rotation direction of the rotating body. The switch device according to claim 1, wherein the switch device is provided. The rotating body includes a protruding portion that protrudes to the outside from a through hole that penetrates in the thickness direction of the cover,
The protruding portion projects a lever that rotates the rotating body in a predetermined rotation range toward the outer periphery of the rotating body,
In the projection view from the cover to the housing, the fusion region includes a first region provided in the protruding direction of the lever in the peripheral portion, and a second region provided opposite to the protruding direction via the protruding portion. The area and
The switch device according to claim 2, wherein the first region has a larger area than the second region. A housing having a recess;
A fixed terminal having a fixed contact exposed in the recess and fixed to the housing;
A conductive movable contact piece that moves between a position contacting the fixed contact and a position separating from the fixed contact by being stored in the recess and rotating with respect to the housing;
A cover for closing the opening of the recess,
The housing and the cover, in a projected view from the cover to the housing, along a peripheral portion of the opening in the housing, a fusion region where the housing and the cover are fused, and the housing A stress relaxation region for relaxing stress generated between the cover and the cover;
The housing includes a rotating body that rotates the movable contact piece, and a flexible ring that contacts the housing, the rotating body, and the cover and that is provided along a rotation direction of the rotating body. Has been
The rotating body includes a protruding portion that protrudes to the outside from a through hole that penetrates in the thickness direction of the cover,
The protruding portion projects a lever that rotates the rotating body in a predetermined rotation range toward the outer periphery of the rotating body,
In the projection view from the cover to the housing, the fusion region includes a first region provided in the protruding direction of the lever in the peripheral portion, and a second region provided opposite to the protruding direction via the protruding portion. The area and
The switch device, wherein the first region has a larger area than the second region. 5. The switch device according to claim 1, wherein there are at least three fusion regions along the peripheral portion. 6. The housing has a first projecting portion projecting outward along a direction opposite to the depth direction of the recessed portion, and in a projection view from the cover to the housing, than the outer periphery of the peripheral portion. The switch device according to claim 1, wherein the first protrusion is provided on a side close to the opening. The cover has a second protrusion that protrudes along the thickness direction of the cover and is fitted with the first protrusion.
The fusion region is a region where the peripheral portion and the second projecting portion overlap in a projection view from the cover to the housing.
The switch device according to claim 6. The switch device according to any one of claims 1 to 7,
A door provided with the switch device, the opening / closing position of which is detected by the switch device.
A vehicle characterized by that.

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